How to model this helix in Blender
If you assign a Screw modifier in Z to a circle in the XY plane, you should get an object in the form of your openscad reference.

The circle is at helix-radius from the world origin.. by moving it there in Edit mode, you ensure its Object Origin (and therefore the center of rotation of the helix,) is left at World 0.
Any XY slice through the helix will show a circular profile.